Typographical casting machine



June 26, 4'1928. 1,674,727

D. S. KENNEDY TYPOGRAPHICAL CASTING MACHINE l, n Il l 1 INVENTOR @MM/@12W June 26, 1928.

' 1,674,727 n. s. KENNEDY TYPOGRAPHICAL CASTING- MACHINE Figd July 11, 1924. 2 sheets-.sheet 2 INVENTOR Patented .lune 26, Y1928.

@UNITEDI-'STATES DAVID-s. KENNEDY, oF'BRooKLYN, NEW YORK, AssIGNoR To MnWinNT-HAL:inLINO-y lTYPE COMPANY', A CORPORATION on NEWYORK.y

` TYIoGRAPHIoAL CASTING MACHINE.

Applicationr ined July 11',

y molten`-metal is"pumped aty intervals from a melting `'pot into a mold up against a com-4 posed 'valine of matrices for the production ofj p rintingfhars'or slugs..f1n orderto secure.

the, most advantageous results, it is',y desirable 10 thatthemolten metal inthe pot be keptLas nearly as possible at a constantlevel and at a, `substantially uniform temperature.` The present invention obtains these results'by the provision'of an automatic feeder which supplies, cold metalto the potv at such times and insuch quantities aspmay be required.

In, the preferred yembodiment illustrated, thecold. metal is in the form .of long bars or pigs,provided valong one of their faces With a series' of arresting teeth or shoulders, and is fed, into the Yp'ot `loy gravity through ya gui'deLoij chute underthecontrol of an automatic pawlf or detent which cooperates with the teeth on the bars to 'effect the .progressive step-hy-step advanceof the hars' along the guide.l ,A'potverdevic'e or lever, operated some moving part ofthe machine, (e. "g.',/by the melting potitselflactuates the paWl at predetermined vperiods toj'cause the feeding of the metal bars, and means, (such asa iloatf) governed-by the 'level' of the' moltenv metal inthe pot, control theA period of actuati'onof the Apaivl;y The construction ofthe parts and: their mode' of'o'peration Will best be understood from the detailed description to'follovv; 'v c Q i VIn th e .accompanyingdrawings; 4. 1i is aside elevation,partly in section, of theA vmelting 'fpotfof` a` linotype machine equippedl with" the improved automatic. ffeederg:l y

fFigf2isa vertical section .taken through Y theguideor'chute and showing one of the in etalfhars in, cooperation with the automfii. feedp ,avvl;f lVE f, r, f V yection taken on the line aeaoffriea. l'

` Fig v4gis r1/"similar showing Pwl. Withdrawn' the metal han* l Fig. fi's,a`detache'dperspectiveivievv kof the guid andvtheperts mQunted thereon; fnd'. ff14`ig., 6` is 'a 4vievvsimilar t- Fig 2, on a from the guide :torelease greatly reduced i scale, vs hovving both ends of Y 1924. Serial No. 725,343.1.-

the metal bar, and themanner in which itis allowed to follow, the precedingy one'through the guide. K" "l F or the sake of clearness, vonly such parts of. a linotype machinexas are immediately the customary delivery'thrat or rnouth'A1 f ythrough Whichthe molten metal is injected.

byth'epump B into themold C' forfthe sliigV casting operation.- c As AisVSV Well* known, `at

each cycle of operation ofthe machine, 'the pot A is swung to and from the mold by the rotarycam I), Fig. 1 showing the pot in-its forward or'casting position.

v Inj carrying out the present invention, they cold metal" to 'be supplied toy the pot is in the formof long hars or pigs X, which may loev of any suitable lengthv and of" anydesired from in cross-section, andVWhich arefpro-v vided ivitha series of squared-oil' 'arresting teeth vor shoulder/5X?. In the example il-r lustrated,` the vteeth are` cast on one of the s idefaces'y of the bars; and lextend entirely CrOSs'theSame from vonefedge to the other,l

the rear Walls *Xz/ ofthe intermediate recesses sloping upwardly towardthe'fshoul ders to facilitate their cooperation with the feed paWl.V Themetal Vloar's X are fed' intov the pot through a suitable' guide or chute E extended ,downwardly v throughY opening in' the 'pot cover. 'Asia convenient meansfof support, the chute is provided atitsl opposite edges with horizontal ribs orledges Elendvertical tonguesEz, the latter being fitted in slots. formedf'in the opposing facesof apair so l of iipright supports A2 on thepot cover, land i the former restingV upon .the upperV edgesfof saidl supports. As thus supported',` the chute Eand all` of itsv attachedI parts may lhe readappliedtoandremoved from the pot :at

Will. Thechute is provided with a pairfi griphandles E3 to facilitate suchy manipula--VA ".Tle feeding of the metal bars through' theclrute yE is controlled hy a-pawl or detent F pivoied by; ai `pin F1v to@ thejsidefof' the chute and j adapted f t'o" be rocked into and out of engagement yviththe 'metalhars through an aperture E* cut through the side pawl F is in active position, it stands'in When, however, the pawl is withdrawn or moved to inactive position (Fig. t), it clears the shoulders X1 and permits the bar to slide downwardly along the chute. In this connection, it may be noted that the chut-e is provided at `its lower end with a steel strap or stirrup E5 which limits the descent of the metal bar when released by the pawl. After the metal bar has thus been released, the pawl F is returned to active position in timeto beengaged by the following shoulder Xl and again limit the descent of the bar until the time arrives for the next release of the bar. In this way, the pawl, and par- Vticularly in cooperation with the strap E5,

exercisesa positive control over the metal bar and insures its progressive step-by-step advance into the pot under the action of gravity." v

i Directly above the pawl F and mounted to turn on the same'lpivot pin F1, is a rightangular actuating lever G, the shorter arm of which is formed with a depending lip G1 arranged to engage the outer edge of the pawl F. vA helical spring H, connected at one end to the longer arm of the` actuating lever G and at its opposite end to the side of the chute E, tends constantly to hold the lip G1 in-engagement with the pawl F and the latter in active position, or in engagement with the metal bar. When the melting pot A is swung forward to casting position, the longer arm of the actuating lever G engagesan upright pin J1 of a stationary bracket J and is rocked rearwardly on the pivot F1 against the action of the spring H (see Figs. l, 3 and 4).'

. So'long as `the moltenmetal in the pot is at the desired level, the rocking movements of the kactuating lever G, do not affect the pawl F, which remains projected into the chute E to yprevent the release or descent of the metaljbar; but -whenthe metal falls below such level, the pawl is automatically coupled to the actuating lever and withdrawn Vfrom the chute. so as to release the metal bar in the manner before described. Such actionvof the parts is controlled by a float K located in the melting pot A and resting in the molten metal. This float is con-l nected to the lower end of a vertical rod or stein K1v slidable in guides Econ the side of the chute and bent at right angles atk its t upper end to make telescopic connection with sleeve K2 carrying avertical coupling pin K3. This pin K3 passes Vdownwardly through Aa` tubular boss Gr? rising from the shorter arm of the actuating leverG and is adapted toy be lowered into or lifted'out of engagement with a holeor recess F2 formed in the pawl F according to the position of the ioat K; i

From the foregoing, it will be seen that the actuating` lever G is rocked to and fro at each casting operation, being moved in one directionl by its engagement with the stationary pin J1 as the melting pot A advances to casting position, and in the opposite direction yby the spring H as the pot retreats from casting position. Such to-andfr0 motions of the actuating lever are purely idle and do not affect the pawl F until the molten metalin the pot drops below the desired level.' When this occurs, as above intiniated., the float K. lowers the coupling pin ICi into the recess F2 of the pawl Fand connects the latter tothe actuating lever. Due to this connection of the parts, upon the next advance ofthe meltingpot to casting position, the pa-wl F is withdrawn from the chute E and becomes disengaged from the tooth X1 on the metal bar VX` v(see Fig. et), permitting the latter to slide down. wardly by gravity into the melting pot until it is arrestedv by the strap E5. The metal bar, in entering t-he molten meta-l, displaces the same and forces the lioat Kv upwardly; thereby` lifting the coupling pin K3 out' of engagement with the recess Fiend disconnecting'the pawl' from the actuating lever Gr.`

ever the molten metal falls below the desired level. VIn this way, the metal bars are` fed Y intov the pot step bystep under posit-ive control and in suchy manner that the molten metal is kept at a substantially constant level and at a practically uniform temperature.`

It may be observed that when the last or uppermost tooth on the metal bar passes the pawl F, the bar is then free to pass 'into the melting pot as rapidly as it is fused.ir This would `result in a slight raising of the metal within, the pot above the level desiredfif the bar'were vof uniformbulkthroughout. To avoid this result, the upper end portion of the .bar is preferably reduced or cut away as at X3 (see Fig. 6), so that the continued fusion thereof will lfnot cause the Vmolten metal to rise excessively, the latter being thus kept at approximately the lsame level atall times'. As an alternative', the vpawl F might be placed at a lower level or nearer the lower end of the guide orchute E, if desired. It may also be observed that, by reason'of the foregoing condition, anew bar when placedv f tion of the preceding bar.

tanceffrom the pawl to the-strap E5. ifVVhiler this would not be' serious, itfmay lie-"avoided byfomittingv the teeth X1L atV the lower endfoff" the bar, asindi'cated in-li'ig- Ggfwhich shows a newbar restingup'on; the remaining porent from this figure that as theold bar'melts away, the new bar is permitted to slide down the chute vuntil arrested bythe engagement of its first tooth with the pawl F, P

at which time the end 'of the bar willstand only a short distance away from the strap P E5. i f

The foregoing improvements have been shown merelyin preferred forman'dbyl way of example, and as applied to a'casting pot of the regular linotype machine, but obviously many modifications and alterations may be made therein and in their mode of adaptation without departing from the spirit of the invention. For instance, the form ofthe teeth on the metal bars Amay be variously modified and still made to perform their function. Again, the periodic operation of the actuating lever, insteadA of various other changes will readily suggestA themselves to those skilled in the art. It should be understood, therefore, that the invention is not limited to'any specific form or embodiment, except in sol far as such limitations are specified. in the claims. lIt

may be noted, however, that the particularv arrangement shown and described `is extremely simple, compact, and requiresionly a few parts, which cooperate in a very effec-v tive manner to carry out the objectsof the jinvention. i

Havingthus described my invention, its

- construction and mode of operation, what I claim and desire to secure byLetters Patentk of the United States, is as follows:

`1- A type-metal bar feeding mechanism for the melting pot of a linotype machine, said mechanism consisting' of a Vfeed pawl movable into and out ofl engaging relation to the typemetal bar, a periodically actuated member for withdrawing said pawl from engagement with the bar, and an automatically controlled coupling device for connectingY the periodically actuated V'member directly to the feed pawl or forjdisconnecting said parts,as required. Y

It will be appar-y actuated lever pot as arunit.

i 2,1 Af type-metal4T bari feeding mechanism n for lthe melting pot.' ofl` a linotype f machine,

said mechanism consisting of a feed pawl movable 1nto and youtof en'gaging'relation .to

the vtype-metal bar, a periodically actuated member forwithdrawingfsaid pawl from engagement with the bar, and; afloat supported! coupling device fory connecting the periodically actuated member directly to the feed `awl orfor disconnecting said parts, according to theheight of the molten metal in the said mechanism consisting of a pivoted feed pawl movable into and `out of engaging relation tothe type-metal bar, a Vperiodically the feed pawl lfor withdrawing it lfrom engagement with the bar, and a float-controlled coupling pin for connecting the leverdirectly to the pawl or for disconnecting saidparts,v according to the height ofthe molten meta-l in the pot. y y

4. A type-metal bar feeding mechanism for the melting pot` of a linotype machine,

said mechanism` consisting of a pivoted feed pawl movable into and out of engaging relation to the type-metal bar and formed with an aperture to receive a coupling pin, a peivoted on the same axis as 3..A ytype-metall bar vfeeding mechanism v for the melting pot .of a linotype machine,

riodicallyactuated lever for withdrawing Y the pawl from .engagement with the type-A ,Y

metal bar and formed with a tubular boss adapted to register with the aperture inv the `feed.pawl,-and afloat-controlled coupling' ypin slidably ,arranged in said tubular boss and adapted to be lowered into the aperture of the feed pawl to connect it directly to the periodically actuated lever when the molten metal inthe pot drops -belowa predeter-v mined level.

5L A type-metal bar feeding mechanism for the meltingpot of a linotype machine,

said mechanism consisting of a pivoted feed pawl movable into and out of engaging lre# lation to the type-metal bar, a .periodically actuated lever pivoted on the same'axis as u the feed pawl and formed with a lip portion A to engage the pawl Iat its outer edge and,v

move it intoengaging relation to the typelmetal bar, a coupling pin for connecting the lever directly tothe pawl to enable the lever to withdraw the pawl from engagement with the bar, anda kfloat carrying the coupling pin; and Vcontrolling. `its operation according to the'height of the molten metal in the pot.

6. Atype-metal.barfeeding mechanism as .specified in claim 1 including a removable, Guide' chute for the type-metalbar, and charf acterized by the fact that the feed pawl, actuating member,"and coupling ldevice are .all

mounted upon and carried by the guide chute, whereby Vthe feeding mechanism` mayv be applied to or removed from the melting 7. A type-metal bei' feeding mechanism for the melting pot of a linotypermaehine, said mechanism consisting of 1 type-metal bei' guide chute. having means to support it in an upright position Within the pot, and

an utomatically Controlled feed pawl mov` able into and out of engaging relation to the type-metal bar, said pawl beting locatedueit` such distance above the lowei` end of the` ehutees to stand outside of the melting pot, 10 as und for the purpose described., Y i

In testimony Whereot' I have aixed my signature hereto. 'Y

. DAViD ,sg KENNEDY. 

